Smelting-furnace.



T. H. HOLROYD.

SMELTING FURNACE.

APPLICATION FILED D120. 21, 1912.

1 N Patented Aug. 25, 1914. 1,1 08, Q Q 2 SHEETS--SHEBT l.

3 R Yb 0 Q N a Q 8 THE NORRIS PETERS 60.. PHOTOLITHOH WASHINGTON. D. C.

T. H. HOLROYD.

SMELTING FURNACE.

APPLIOATION FILED DEC. 21. 1912.

Patented Aug. 25, 1914 2 SHEETS-8HEBT 2.

THE L'ORRIS PETERS ca, PHOm-LITHQ. WASHINGTON. D. C

a ing, decarbonizing or other aorn a subject of His Majesty UNITED STATES PATENT OFFICE.

THOMAS HOWARD HOLROYD, OF SOUTHFIELDS, ENGLAND.

SMELTING-FURNACE.

To aZZ whom it may concern.

Be it known that I, THOMAS HOWARD HoL- the King of England, residing at 41 West Hill road, Southfields, in the county of Surrey, Kingdom of England, have invented certain new and useful Improvements in Smelting-Furnaces, of which the following is a specification.

This invention relates to improvements in electric and other smelting furnaces and it has for its object to provide a simple and portable furnace capable of effectively dealing with very large quantities of metal.

he invention is hereinafter described with reference to the accompanying drawings in which Figure l is a side elevation of a furnace according to my invention, and Fig. 2 is a sectional end elevation thereof.

As shown the furnace proper comprises a tubular cylindrical casing at which is lined internally with fireproof material Z2 such as ganister, or fireclay or other known fireproof material.

pouring lip 03 having a cut off valve 6 to control the passage of the molten metal while the other end is provided with a removable closed cover or end f. The top or upper half of the furnace casing a is adapted to be lifted off from the lower half by means of rings or eyes a provided thereon, the two parts being joined together along diametrically opposite longitudinal flanges g the lower of which carries a series of upstanding hinged or stationary pins or projections which pass through corresponding holes in the upper flange. The said pins being forated for the reception of cotter screws or other securing means.

Specification of Letters Patent. Application filed December 21, 1912. Serial No.

clay or other like lining Z) of the furnace is shaped and formed to provide a multiple continuous crossed screw thread or worm b which serves for mixing the contents and of chemicals materials for the production of eliminating, fluxing, carbonizpurposes and the ing device for the introduction or metals or alloys or for head of this device would be pivotally con- Patented Aug. 25, 1914.

nected to a suitable operating plunger, c0nnected to a lever j terminating in close proximity to a platform is hereinafter described. e furnace a is mounted to revolve axially in a suitable tilting cradle Z which is provided with two three or more rows of all bearings m which run races n provided around the corresponding furnace casing. The melting of the metal may be effected in any well known manner by continuous or alternating currents with or without electrodes and the current would be supplied from any suitable or readily available source and led to the interior of the revolving furnace by means of an insulated collector ring 0 and contact maker 0 as the furnace revolves. I also provide as shown a plurality of electric laminated cores which are wound on the outer portions and covered with fireclay or some fire proof substance on the inside the whole revolving together with the furnace.

Toothed rings 37 are provided around the periphery of the casing a for the purpose of bling the said furnace to be rotated and the necessary movement is imparted simultaneously to each end thereof by means of intermediate wheels 9 which in turn receive their motion from other wheels 1" a common main shaft 8. This shaft 8 is suitably journaled in the cradle Z and it carries another spur wheel t which is driven from a pinion u on the counter-shaft 1; which latter shaft 12 is driven from a pinion w on the shaft of a motor m which drives a or when disengaged it is free to remain stationary while the shaft revolves.

The main frame or cradle Z in which the furnace a is revolubly mounted is itself free to be tilted with the said furnace into any desired position for pouring the metal as shown by the dotted lines in Fig. 1. To this end it is mounted on a series of rollers 3 in a suitable bed plate or carriage 4 which is itself provided with wheels 5 adapted to run on rails 6 to the place where it is required. The tilting movement of the cradle Z is effected by the provision of a toothed rack or quadrant 7 on the bed plate 4 which is engaged by a pinion 8 on a shaft 9 journaled in brackets 10 on the aforesaid cradle Z. The shaft 9 also carries at its other end a bevel wheel 11 which meshes with another bevel wheel 12 secured to a shaft 13 which also carries a spur wheel 14. The said spur Wheel 1 1 is adapted to be driven by means of a train wheel 14; and pinion 15 on the motor counter-shaft *0 and this pinion 15 is adapted to be coupled with the said shaft by means of a magnetic clutch 16. Thus it will be seen that power derived from the countershaft 41 driven by the motor m can be utilized separately for rotating the furnace a about its longitudinal axis or for tilting the furnace for pouring by simply controlling the two clutches 2 and 16 as described.

A separate motor 17 is provided for the purpose of moving the whole device upon the rails 6 and to this end I provide a worm 18 on the end of the motor shaft which drives the shaft 22 of one pair of wheels 5 by way of the train of wheels 19, 20 and 21.

All the operating movements of the furnace are controlled from a single main con trol switch boX 223 on the movable bed plate 1 from which the wires pass to the motors a and 17 and also by way of a cable 2 1 to the coils 25 or electrodes for heating the metal, these coils forming the primary of a trans former whereof the metal in the furnace forms the secondary.

The control platform 70 previously referred to is so arranged that whatever angle the furnace is tilted to the platform will remain horizontal. To this end it is pivotally mounted at 26 on a support 27 and connected at 28 to a link or stay 80 supported from the Copies of this patent may be obtained for operating platform and five cents each, by addressing the convergent ends 31 of a pair of rods 28, 29 secured to the bed plate 4:. It will thus be seen that as the ends 31 about which the stay 30 turns is vertically above the imaginary center about which the whole furnace tilts, to a distance equal to the distance between the pivot points 26 and 28, that a parallel motion is in effect obtained and the platform will always remain horizontal. Along each side of the top of the cradle Z 1 provide a platform 32 as shown for inspection or re pair purposes.

It will thus to provide a revolving furnace that can be moved in any desired position.

\Vh at 1 claim as my invention and desire to secure by Letters Patent of the United States is In a device of the kind described, a carriage, a cradle mounted in tilting movement on the carriage. a furnace mounted on the cradle, an operating platform hinged to said cradle, and a link connection between the the carriage where by the platform is maintained in horizontal position when the cradle is tilted.

In testimony whereof I have hereunto signed this specification, this 22nd day of November 1912.

E. H. BANKS, J. P. Evnnn'r'r.

Commissioner of Patents.

Washington, D. c."

be manifest that I am enabled 

